Solid-state lighting technology, such as LED devices, is critical to improving energy efficiency in street lighting systems. In Ecuador, government policies have established the obligation to exclusively use LED systems starting in 2023, except in special projects. Ecuador, known for its vast biodiversity, protects its national parks, which are rich in flora, fauna and natural resources, through international institutions and agreements such as UNESCO, CBD and CITES. Although reducing electrical consumption usually measures energy efficiency, this article goes further. It considers aspects such as the correlated color temperature in the lighting design of protected areas, light pollution and the decrease in energy quality due to harmonic distortion. Measurements of the electromagnetic spectrum of the light sources were made in an area in the Galápagos National Park of Ecuador, revealing highly correlated color temperatures that can affect ecosystem cycles. In addition, the investigation detected levels of light pollution increasing the night sky brightness and a notable presence of harmonic distortion in the electrical grid. Using simulations to predict the behavior of these variables offers an efficient option to help preserve protected environments and the quality of energy supply while promoting energy savings.

Efficient lighting is a goal for energy efficiency and sustainable development. There are designs for electrically powered public lighting fixtures with solar panels installed in hard-to-reach areas or protected areas without an electrical power supply network. In this paper, a LED luminaire has been modeled by solving the heat equation using a heat source (LED 50W) to observe its behavior. The simulations were developed at ambient temperatures of 24°C and 35°C. It is important because these luminaires are installed in areas with this usual temperature, for example, the Ecuadorian Amazon or the Galapagos Islands. 51.7°C was obtained in LED for an ambient temperature of 24°C, which is the normal laboratory case, and 62.5°C in LED for an ambient temperature of 35°C. These results must be analyzed since it has a direct impact on the expected life of the luminaire and therefore on the maintenance and replacement plans. Through the results obtained, it was determined by Arrhenius model a reduction of 160 days in the maintenance plan.

This study aims to assess the energy efficiency of LED luminaires used in public road lighting by comparing manufacturer-declared photometric and electrical parameters with laboratory simulation results. The research also evaluates the performance of these luminaires across various road types and installation configurations to determine compliance with national and international standards. Eleven LED luminaires were tested using a rotating mirror goniophotometer in an ISO/IEC 17025-accredited laboratory. Simulations were conducted using Dialux Evo software across six road types (M1–M6) and three installation configurations (unilateral, bilateral, and staggered). Key parameters analyzed included brog (L_m), overall uniformity (U₀), longitudinal uniformity (U_l), luminous efficacy (lm/W), power factor, and total harmonic distortion (THD) in voltage and current. Discrepancies were found between manufacturer-declared and simulation results, especially in higher-class roads (M1–M3), where up to 28.57% of luminaires failed to meet the minimum luminance requirements when tested. The study highlights the importance of validating manufacturer specifications through accredited laboratory testing. Overall, LED technology improves energy efficiency in public lighting, and inconsistencies in the power factor and luminance performance suggest the need for stricter regulatory oversight and more rigorous quality control. Simulation tools like Dialux Evo prove essential for optimizing lighting designs tailored to specific road types and traffic conditions.

El presente trabajo expone la implementación de un colorímetro a partir del sensor AS7341 de 8 canales en conjunto con la placa ESP32. Con la lectura de los ocho canales se emplea la interpolación cúbica de Hermite, interpolación segmentaria cúbica e interpolación Akima para reconstruir el espectro electromagnético en un intervalo de 360nm a 830nm con pasos de 1nm, para fuentes LED con temperatura de color correlacionada (TCC) declaradas por fábrica de 2700K, 3000K, 4000K y 5000K. El colorímetro portátil UPRTEK, es empleado para comparar los resultados entre los espectros electromagnéticos medidos y los interpolados con cada técnica descrita. A partir de los espectros interpolados, se realiza el cálculo de coordenadas cromáticas x, y, u, v. Posteriormente se obtiene la TCC. Los resultados muestran que la TCC obtenida por las diferentes técnicas de interpolación se encuentran dentro de los rangos permitidos para los 2700K, mientras que para 3000K solo dos técnicas se encuentran dentro de los rangos y para las demás temperaturas todas las técnicas se encuentran fuera de los rangos.